Which of the following biological roles is primarily associated with lecithin, a low molecular weight organic compound found in cell membranes?
Energy storage
Maintaining cell membrane structure
Catalyzing enzymatic reactions
Genetic information storage
Related Questions
Lipids are generally
I. water soluble
II. water insoluble
III. soluble in non-polar organic solvents
IV. not soluble in non-polar organic solvents
Choose the correct options
Only I
II and III
II and IV
Only IV
Given below is the chemical formula of
Palmitic acid
Stearic acid
Glycerol
Galactose
A triglyceride is formed from glycerol and:
One fatty acid
Two fatty acids
Three fatty acids
Four fatty acids
Which component of lecithin contributes to its amphipathic nature, allowing it to form bilayers in cell membranes?
Glycerol backbone only
Fatty acid chains only
Phosphate group only
Phosphate group and fatty acid chains
Which of these biomolecules does NOT have a polymeric structure?
Proteins
DNA
Polysaccharides
Lipids
Arachidonic acid is
A saturated fatty acid
An omega-3 fatty acid
An omega-6 fatty acid
A carbohydrate
A lipid molecule composed of glycerol, two fatty acids, and a phosphate group is classified as a:
Triglyceride
Steroid
Phospholipid
Wax
Lecithin, a relatively small organic molecule found in various living tissues, belongs to which class of biomolecules?
Carbohydrate
Protein
Nucleic Acid
Lipid
Which of the following correctly describes the solubility of lipids?
Soluble in water, insoluble in organic solvents
Insoluble in water, soluble in organic solvents like ether and chloroform
Soluble in both water and organic solvents
Insoluble in both water and organic solvents
Paraffin wax is
a complex carbohydrate.
a mixture of solid hydrocarbons.
a type of lipid found in plants.
a synthetic polymer.
